Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 2135
interventional 1630
Observational 461
Registry 44

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 644
Drug|placebo 305
Other 169
Behavioral 123
Device 83
Dietary Supplement 53
Procedure 52
Dietary Supplement|placebo 32
Biological 29
Drug|Other 25
Drug|Procedure 17
Biological|placebo 9
Device|Drug 8
Behavioral|Other 6
Biological|Drug 6
Device|Other 6
Diagnostic Test 6
Dietary Supplement|Drug|placebo 6
Behavioral|Dietary Supplement 5
Dietary Supplement|Drug 5
Biological|Procedure 4
Device|Procedure 4
Behavioral|Drug 3
Drug|Other|placebo 3
Other|Procedure 3
Behavioral|Procedure 2
Biological|Drug|placebo 2
Biological|Other 2
Dietary Supplement|Other 2
Drug|placebo|Procedure 2
Other|placebo 2
Behavioral|Device 1
Behavioral|Drug|Procedure 1
Biological|Device|Other 1
Biological|Drug|Other 1
Combination Product|placebo 1
Device|Drug|Other 1
Diagnostic Test|Other 1
Dietary Supplement|Drug|Other 1
Dietary Supplement|Other|placebo 1
Drug|Procedure|Radiation 1
Drug|Radiation 1
Radiation 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 569
NA 129
China 77
Japan 68
Canada 58
France 41
Germany 40
United Kingdom 40
Denmark 36
Brazil 34
Korea, Republic of 30
Italy 29
Taiwan 27
United States|Puerto Rico 22
Iran, Islamic Republic of 20
Netherlands 16
Mexico 15
Belgium 14
Spain 14
Australia 13
Switzerland 13
Hong Kong 11
Turkey 11
United States|Canada 11
Egypt 7
Sweden 7
Austria 6
India 6
Israel 6
Greece 5
Ireland 5
Thailand 5
Argentina 4
Singapore 4
United States|Japan 4
United States|Poland 4
Australia|New Zealand 3
New Zealand 3
Norway 3
Paraguay 3
Poland 3
Russian Federation 3
Australia|Canada|New Zealand 2
Chile 2
Malaysia 2
Philippines 2
Romania 2
Argentina|Australia|Belgium|Brazil|Croatia|Czechia|France|Germany|Greece|Israel|Italy|Korea, Republic of|Lithuania|Malaysia|Mexico|Panama|Philippines|Poland|Russian Federation|Serbia|Singapore|Spain|Sweden|Taiwan|Thailand|Turkey|United Kingdom 1
Argentina|Chile|Czechia|Germany|Hungary|Poland|Romania|Russian Federation|Turkey 1
Argentina|Czechia|France|Germany|India|Singapore|Spain|United Kingdom 1
Argentina|Paraguay 1
Argentina|United States|Brazil|Canada|Czech Republic|Germany|Mexico|Poland|Puerto Rico|Russian Federation|Spain|Ukraine 1
Armenia|Georgia|Moldova, Republic of 1
Australia|Austria|Czech Republic|France|Germany|Hungary|Italy|Poland|South Africa|Spain|United Kingdom 1
Australia|Belgium|Bulgaria|Czech Republic|Denmark|Estonia|France|Germany|Greece|Hungary|Israel|Italy|Latvia|Mexico|Poland|Portugal|Romania|Russian Federation|Serbia|Slovakia|Slovenia|Spain|United Kingdom 1
Australia|Belgium|France|Germany|Hungary|Italy|Poland|Romania|Russian Federation|Spain|Thailand|Ukraine 1
Australia|Brazil|Canada|Colombia|Ecuador|India|Malaysia|Philippines|United Kingdom|Uruguay 1
Australia|Bulgaria|France|Germany|Hungary|Israel|Italy|Japan|Korea, Republic of|Poland|Romania|Spain|Turkey|United Kingdom 1
Australia|Canada|China|Hong Kong|India|Malaysia 1
Australia|Canada|China|India 1
Australia|Canada|China|New Zealand 1
Australia|Denmark|France|Germany|United Kingdom 1
Australia|India|New Zealand|Russian Federation 1
Australia|Poland 1
Australia|United States|Argentina|Belgium|Canada|Czechia|Denmark|Germany|Hungary|Israel|Italy|Netherlands|Norway|Poland|Romania|Russian Federation|South Africa|Spain|Sweden|United Kingdom 1
Austria|Belarus|Bulgaria|Croatia|Czechia|Finland|France|Georgia|Germany|Hungary|Ireland|Israel|Latvia|Montenegro|Netherlands|North Macedonia|Poland|Portugal|Romania|Russian Federation|Serbia|Slovakia|Slovenia|Spain|Ukraine|United Kingdom 1
Austria|Bulgaria|France|Germany|Italy|Macedonia, The Former Yugoslav Republic of|Poland|Romania|Russian Federation|Ukraine 1
Austria|France|Germany 1
Austria|United States|Belgium|Canada|Czechia|Denmark|Estonia|France|Germany|Greece|Hungary|Italy|Latvia|Lithuania|New Zealand|Poland|Portugal|Russian Federation|Spain|Sweden|Switzerland|Turkey 1
Bangladesh 1
Belarus|Belgium|Bulgaria|Colombia|Dominican Republic|Estonia|Georgia|Greece|Guatemala|Hungary|Italy|Panama|Peru|Poland|Romania|Russian Federation|Serbia|South Africa|Spain|Turkey|Ukraine|United Kingdom 1
Belarus|Bulgaria|Croatia|Denmark|Indonesia|Israel|Italy|Latvia|Lithuania|Malaysia|Romania|Singapore|Thailand 1
Belgium|Canada|France|Netherlands|Poland|Spain|United Kingdom 1
Belgium|Czech Republic|Denmark|Finland|Germany|Italy|Netherlands|Spain|Sweden|United Kingdom 1
Belgium|Czech Republic|Germany|Hungary|Poland|United Kingdom 1
Belgium|Czechia|Denmark|Germany|Greece|Italy|Macedonia, The Former Yugoslav Republic of|Netherlands|Spain|United Kingdom 1
Belgium|Denmark|France|Italy|Netherlands|Spain|United Kingdom 1
Belgium|Germany|Italy|United Kingdom 1
Belgium|Germany|Portugal|Spain|United Kingdom 1
Belgium|Italy 1
Bulgaria|Czech Republic|Hungary|Poland|Romania|Slovakia 1
Bulgaria|Denmark|Finland|Israel|Italy|Spain|Sweden 1
Bulgaria|Georgia 1
Bulgaria|Hungary|Lithuania|Romania|Slovakia 1
Bulgaria|Moldova, Republic of|Romania 1
Bulgaria|Romania|United Kingdom 1
Bulgaria|South Africa 1
Canada|Germany|United Kingdom 1
Canada|Malaysia|Netherlands 1
China|Hong Kong 1
China|Japan 1
China|Slovakia|United States|Argentina|Australia|Brazil|Bulgaria|Canada|Chile|Colombia|Czechia|France|Germany|Guatemala|Hungary|India|Japan|Korea, Republic of|Lithuania|Malaysia|Mexico|New Zealand|Philippines|Poland|Puerto Rico|Romania|Russian Federation|Serbia|South Africa|Spain|Taiwan|Ukraine|United Arab Emirates|United Kingdom 1
Colombia 1
Colombia|Finland|Germany|Guatemala|Korea, Republic of|Philippines|Poland|Romania|Russian Federation|Singapore 1
Croatia|United States|Austria|Belgium|Czech Republic|Germany|Latvia|Lithuania|Poland|Romania|Russian Federation|Serbia|South Africa|Ukraine|United Kingdom 1
Czech Republic 1
Czech Republic|France|Austria|Germany|Hungary|Italy|Macedonia, The Former Yugoslav Republic of|Malaysia|Poland|Russian Federation|Serbia|South Africa|Spain|Ukraine|United Kingdom 1
Czech Republic|France|Germany|Hungary|Italy|Lithuania|Poland|Portugal|Serbia|Sweden|Switzerland|Turkey 1
Czechia|Denmark|Germany|Hungary|Italy|Netherlands|Poland|Spain|United Kingdom 1
Czechia|Germany 1
Czechia|Germany|Hong Kong|Korea, Republic of|Malaysia|Philippines|Singapore|Taiwan|Thailand|United Kingdom 1
Czechia|Hungary 1
Czechia|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Chile|China|Colombia|Denmark|Finland|France|Germany|Greece|Hong Kong|Hungary|Ireland|Israel|Italy|Japan|Korea, Republic of|Lithuania|Malaysia|Mexico|Netherlands|New Zealand|Norway|Philippines|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey|Ukraine|United Kingdom|Vietnam 1
Denmark|Germany|Hong Kong|Israel|Poland|Singapore|Sweden|Switzerland|United Kingdom 1
Denmark|Norway 1
Estonia 1
Finland 1
France|Belgium 1
France|Germany|Spain|United Kingdom 1
France|Germany|United Kingdom 1
France|Romania 1
France|United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Czechia|Denmark|Estonia|Germany|Greece|Hungary|India|Italy|Korea, Republic of|Malaysia|Mexico|Netherlands|New Zealand|Norway|Poland|Portugal|Romania|Russian Federation|Singapore|South Africa|Spain|Sweden|Taiwan|Turkey|Ukraine|United Kingdom 1
France|United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|Germany|Greece|Hungary|Israel|Italy|Latvia|Lithuania|Netherlands|New Zealand|Poland|Portugal|Russian Federation|Spain|Sweden|Switzerland|Turkey 1
Georgia|Slovenia 1
Germany|Austria|Belgium|Czech Republic|Denmark|Finland|Israel|Norway|Poland|Sweden 1
Greece|Slovenia 1
Hungary|Australia|Belgium|Canada|France|Germany|Greece|Hong Kong|Israel|Italy|Korea, Republic of|Poland|Russian Federation|Spain|Taiwan|Thailand 1
Hungary|Croatia|Georgia|Serbia|Slovenia 1
Indonesia 1
Ireland|Italy|United Kingdom 1
Italy|Slovenia 1
Italy|Switzerland 1
Japan|Taiwan 1
Japan|United States|Australia|Canada|New Zealand 1
Korea, Republic of|China|Hong Kong|India|Malaysia|Taiwan 1
Lithuania|Bulgaria|Germany|Latvia|Netherlands|Poland|Slovakia|Ukraine 1
Malaysia|Hungary|Italy|Macedonia, The Former Yugoslav Republic of|Poland|Russian Federation|Serbia|Ukraine 1
Moldova, Republic of 1
Moldova, Republic of|Romania 1
Netherlands|Russian Federation 1
Pakistan 1
Poland|Belgium|Bulgaria|Croatia|Czechia|France|Georgia|Germany|Hungary|Italy|Portugal|Romania|Russian Federation|Serbia|Slovakia|Spain|United Kingdom 1
Poland|United Kingdom 1
Poland|United States|Australia|Austria|Bulgaria|Canada|Czech Republic|Denmark|Finland|France|Germany|Greece|Hungary|Israel|Italy|Korea, Republic of|Lithuania|Netherlands|Norway|Portugal|South Africa|Spain|Sweden|Taiwan|Turkey 1
Poland|United States|Australia|Austria|Bulgaria|Canada|Czech Republic|Denmark|Finland|France|Germany|Hong Kong|Hungary|Israel|Italy|Korea, Republic of|Netherlands|Norway|Portugal|South Africa|Spain|Sweden|Taiwan 1
Portugal|Czech Republic|Denmark|France|Germany|Italy|Korea, Republic of|Malaysia|Russian Federation|Slovakia|Spain|Taiwan|Ukraine 1
Portugal|Spain 1
Qatar 1
Russian Federation|Germany|Italy|Poland|Romania|Turkey|Ukraine 1
Saudi Arabia 1
Serbia 1
Slovakia 1
Slovakia|Spain|Czech Republic|Estonia|Germany|Netherlands|Poland 1
Slovenia 1
Sweden|Australia|France|Italy|Spain|United Kingdom 1
United States|Albania|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|Chile|Colombia|Czechia|France|Georgia|Hong Kong|Hungary|Israel|Italy|Korea, Republic of|Malaysia|Mexico|Netherlands|New Zealand|North Macedonia|Poland|Portugal|Romania|Serbia|Singapore|Slovakia|Spain|Taiwan|Ukraine|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Chile|China|Colombia|Czechia|Denmark|Finland|France|Germany|Greece|Hong Kong|Hungary|Ireland|Israel|Italy|Japan|Korea, Republic of|Lithuania|Malaysia|Mexico|Netherlands|New Zealand|Norway|Philippines|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Saudi Arabia|Singapore|Slovakia|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey|Ukraine|United Kingdom|Vietnam 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Bulgaria|Chile|Colombia|Croatia|Czechia|Egypt|France|Germany|Greece|India|Israel|Italy|Japan|Korea, Republic of|Kuwait|Lebanon|Malaysia|Mexico|Netherlands|Norway|Philippines|Poland|Portugal|Russian Federation|Saudi Arabia|Serbia|Singapore|Slovakia|Slovenia|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey 1
United States|Argentina|Australia|Austria|Brazil|Bulgaria|Canada|Chile|Colombia|Czechia|France|Germany|Hungary|Israel|Italy|Korea, Republic of|Malaysia|Mexico|New Zealand|Poland|Puerto Rico|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belarus|Belgium|Canada|Czechia|Finland|France|Germany|Greece|Italy|Korea, Republic of|Poland|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|Chile|China|Czechia|Denmark|Estonia|France|Georgia|Germany|Greece|Guatemala|Hungary|India|Israel|Italy|Korea, Republic of|Latvia|Lithuania|Mexico|Netherlands|New Zealand|North Macedonia|Norway|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|Serbia|Slovakia|South Africa|Spain|Sweden|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|China|France|Germany|Greece|Hungary|India|Israel|Italy|Japan|Malaysia|Mexico|Netherlands|Poland|Russian Federation|Slovakia|South Africa|Spain|Thailand|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Canada|Colombia|Czechia|Denmark|Estonia|France|Germany|Greece|Hong Kong|Hungary|India|Israel|Italy|Korea, Republic of|Malaysia|Mexico|Netherlands|New Zealand|Philippines|Poland|Portugal|Romania|Russian Federation|Singapore|South Africa|Spain|Sweden|Taiwan|Thailand|Turkey|Ukraine|United Kingdom|Vietnam 1
United States|Argentina|Australia|Belgium|Canada|Czechia|Denmark|France|Germany|Hungary|Israel|Italy|Netherlands|Norway|Poland|Puerto Rico|Romania|Russian Federation|South Africa|Spain|Sweden|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|Denmark|France|Germany|Italy|Japan|Netherlands|Poland|Romania|Russian Federation|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|France|Germany|Italy|Netherlands|Poland|Romania|Russian Federation|United Kingdom 1
United States|Argentina|Australia|Belgium|China|Colombia|Czechia|Denmark|Finland|France|Germany|Hong Kong|Hungary|India|Israel|Italy|Japan|Korea, Republic of|Malaysia|Netherlands|Norway|Singapore|Spain|Sweden|Taiwan|Thailand|Turkey|United Kingdom 1
United States|Argentina|Australia|Brazil|Bulgaria|Canada|France|Germany|Israel|Italy|Korea, Republic of|Mexico|Poland|Portugal|Russian Federation|Serbia|Ukraine|United Kingdom 1
United States|Argentina|Australia|Brazil|Bulgaria|France|Hungary|Israel|Italy|Korea, Republic of|Malaysia|Mexico|New Zealand|Poland|Puerto Rico|Russian Federation|South Africa|Spain|Ukraine|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|France|Italy|Korea, Republic of|Mexico|Poland|Romania|Russian Federation|Spain|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|France|Italy|Korea, Republic of|Poland|Romania|Russian Federation|Spain|United Kingdom 1
United States|Argentina|Australia|Brazil|Canada|Korea, Republic of|Mexico|New Zealand|Taiwan|Thailand 1
United States|Argentina|Australia|Canada|Germany|Hong Kong|Italy|Korea, Republic of|Malaysia|Peru|Poland|Puerto Rico|Romania|Spain 1
United States|Argentina|Australia|Canada|Germany|India|Italy|Korea, Republic of|Malaysia|Mexico|Poland|Russian Federation|South Africa|Spain|United Kingdom 1
United States|Argentina|Brazil|Bulgaria|Canada|Colombia|Czechia|Germany|Hungary|India|Korea, Republic of|Malaysia|Mexico|Peru|Philippines|Poland|Puerto Rico|Romania|Russian Federation|Slovakia|Spain|Taiwan|Thailand|Turkey|Ukraine|Vietnam 1
United States|Argentina|Brazil|Canada|China|Denmark|Germany|Hungary|India|Japan|Korea, Republic of|Mexico|Peru|Philippines|Poland|Russian Federation|Spain|Sweden|Ukraine|United Kingdom|Vietnam 1
United States|Argentina|Brazil|Canada|Colombia|Germany|Hungary|Israel|Italy|Mexico|Poland|Romania|Russian Federation|South Africa|Spain|Ukraine 1
United States|Argentina|Brazil|Canada|Czech Republic|France|Italy|Mexico|Poland|Puerto Rico|Russian Federation|Ukraine 1
United States|Argentina|Brazil|Colombia|Germany|Hungary|Israel|Italy|Mexico|Poland|Romania|Russian Federation|South Africa|Spain|Ukraine 1
United States|Argentina|Brazil|Germany|Italy|Korea, Republic of|Mexico|Poland|Portugal|Russian Federation|Ukraine 1
United States|Argentina|Czechia|Germany|Jordan|Lebanon|Turkey 1
United States|Argentina|India|Korea, Republic of|Malaysia|Russian Federation|Singapore|Taiwan|Turkey 1
United States|Australia|Austria|Belgium|Bulgaria|Hungary|Lithuania|Poland|Slovakia|Spain 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Germany|Hungary|Israel|Italy|Netherlands|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|France|Germany|Hungary|Israel|Italy|Poland|Russian Federation|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Italy|Poland|Spain|Switzerland 1
United States|Australia|Austria|Belgium|Czech Republic|Denmark|France|Germany|Greece|Italy|Netherlands|Norway|Poland|Portugal|Romania|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Belgium|Canada|Czech Republic|France|Germany|Hungary|Israel|Italy|Poland|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|Czechia|France|Germany|Hungary|Israel|Italy|Netherlands|Poland|Russian Federation|Spain|Sweden 1
United States|Australia|Belgium|Canada|Finland|France|Germany|Italy|Norway|Puerto Rico|Sweden|Switzerland|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Greece|Italy|Netherlands|Puerto Rico|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|Croatia|Czechia|Estonia|France|Germany|Hong Kong|Italy|Korea, Republic of|Lithuania|New Zealand|Poland|Portugal|Spain|Taiwan|United Kingdom 1
United States|Australia|Canada 1
United States|Australia|Canada|Czech Republic|Hungary|Italy|Korea, Republic of|Lithuania|Moldova, Republic of|Poland|Romania|Slovakia|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Australia|Canada|Czechia|Denmark|France|Germany|Hungary|Japan|Korea, Republic of|Norway|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Australia|Canada|Czechia|Denmark|France|Germany|Hungary|Japan|Korea, Republic of|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Australia|Canada|Denmark|Hong Kong|India|Korea, Republic of|Malaysia|Mexico|Poland|Serbia|Slovakia|South Africa|Sweden|United Kingdom 1
United States|Australia|Canada|France|Germany|Israel|Italy|Netherlands|New Zealand|Poland|Spain|United Kingdom 1
United States|Australia|Czech Republic|Germany|Italy|Poland|Puerto Rico|Romania|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Australia|Malaysia|New Zealand 1
United States|Australia|Netherlands 1
United States|Australia|New Zealand 1
United States|Austria|Belgium|Croatia|Czech Republic|Germany|Latvia|Lithuania|Poland|Romania|Russian Federation|Serbia|South Africa|Ukraine|United Kingdom 1
United States|Austria|Finland|France|Germany|Italy 1
United States|Austria|Germany|Hong Kong|Taiwan|United Kingdom 1
United States|Belgium|Canada|Czechia|Germany 1
United States|Belgium|Canada|Germany|India|Poland|United Kingdom 1
United States|Belgium|Czechia|France|Germany|Greece|Hungary|Italy|Poland|Russian Federation|Ukraine 1
United States|Belgium|Germany|Lithuania|Poland|United Kingdom 1
United States|Belgium|Portugal|Spain 1
United States|Brazil|Canada 1
United States|Brazil|France|Italy|Korea, Republic of|Russian Federation|Ukraine 1
United States|Brazil|Hungary|Mexico|Poland|Romania|South Africa|Spain|Ukraine 1
United States|Bulgaria 1
United States|Bulgaria|Canada|Georgia|Germany|Poland|South Africa|Ukraine 1
United States|Bulgaria|Croatia|Czech Republic|Germany|Poland|Romania|Russian Federation|Switzerland 1
United States|Bulgaria|Croatia|Georgia|Germany|Hungary|South Africa|Ukraine|United Kingdom 1
United States|Bulgaria|Croatia|Georgia|Hungary|Serbia|Slovenia|Ukraine 1
United States|Bulgaria|Czech Republic|Germany|Hungary|Italy|Poland|Puerto Rico|Romania|United Kingdom 1
United States|Bulgaria|Czechia|Hungary|Poland|Romania|South Africa|Spain 1
United States|Bulgaria|France|Germany|Italy|Poland|Romania|Spain|United Kingdom 1
United States|Canada|Chile|Mexico|Turkey 1
United States|Canada|China|Germany|Japan|Malaysia|United Kingdom 1
United States|Canada|Denmark 1
United States|Canada|Denmark|France|Germany|Greece|Italy|Netherlands|Romania|Russian Federation|Spain|United Kingdom 1
United States|Canada|Denmark|Germany|Norway|Sweden 1
United States|Canada|France|Malaysia|Philippines|Singapore|Spain|Sweden|Taiwan|United Kingdom 1
United States|Canada|Germany 1
United States|Canada|Germany|Russian Federation|Spain 1
United States|Canada|Puerto Rico|Taiwan 1
United States|Canada|United Kingdom 1
United States|Cayman Islands 1
United States|Chile 1
United States|China|Czechia|France|Hungary|Israel|Italy|Mexico|Poland|Romania|Slovakia|South Africa|Spain 1
United States|Croatia|Czech Republic|Denmark|Georgia|Hungary|Italy|Serbia|Slovenia|Ukraine 1
United States|Czech Republic|Denmark|Germany|Greece|Italy|Netherlands|Portugal|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Finland|France|Israel|Italy|Lithuania|Netherlands|Poland|Russian Federation|Spain|Turkey|United Kingdom 1
United States|France|Germany|Hungary|Italy|Lithuania|Poland|Spain 1
United States|France|Germany|Lithuania|Poland 1
United States|France|Germany|Netherlands|United Kingdom 1
United States|France|Italy|Spain 1
United States|France|Spain|United Kingdom 1
United States|Germany 1
United States|Germany|Greece|Italy|Netherlands|Poland|Portugal|Puerto Rico|Spain|Taiwan 1
United States|Germany|Italy|Spain 1
United States|Germany|Puerto Rico|United Kingdom 1
United States|Germany|United Kingdom 1
United States|Guatemala 1
United States|Hong Kong|Argentina|Australia|Chile|Colombia|Korea, Republic of|Malaysia|Mexico|New Zealand|Peru|Philippines|Puerto Rico|Singapore|Taiwan|Thailand 1
United States|Hungary|Lithuania|Mexico|Poland 1
United States|India 1
United States|Japan|Mexico|Puerto Rico 1
United States|Japan|United Kingdom 1
United States|New Zealand 1
United States|Spain|United Kingdom 1
United States|Sweden 1
United States|United Kingdom 1
Vietnam 1

Sites per Study

Site_count Study_Count
1 1035
2 107
3 46
4 32
5 24
6 17
7 18
8 9
9 10
10 9
11 14
12 11
13 11
14 4
15 13
16 13
17 4
18 11
19 6
20 9
21 8
22 2
23 4
24 6
25 6
26 6
27 3
28 9
29 2
30 7
31 5
32 4
33 3
34 6
35 4
36 4
37 4
38 4
39 5
40 5
41 4
42 1
43 3
44 2
45 5
47 3
49 3
50 3
51 2
52 2
53 2
54 2
55 3
57 3
58 2
60 2
62 2
64 1
66 2
67 2
68 1
69 1
71 1
72 3
73 3
75 1
76 2
83 2
84 1
85 2
89 2
90 2
91 2
98 1
99 1
105 2
106 3
107 1
109 1
111 1
114 2
115 1
118 2
123 1
124 1
125 1
129 1
133 2
138 1
141 1
142 1
143 1
145 1
150 1
157 1
160 2
168 1
169 1
170 1
183 1
184 1
190 1
192 1
196 1
203 1
209 1
210 1
229 1
231 1
239 1
249 1
278 1
342 1
360 1
381 1
398 1
439 1
465 1
503 1
593 1
602 1
754 1
972 1
973 1

Phase

Phase Study_Count
N/A 553
Phase 3 306
Phase 2 302
Phase 4 249
Phase 1 123
Phase 2/Phase 3 44
Phase 1/Phase 2 43
Early Phase 1 10

Number of Arms

Number_of_Arms Count_of_Studies
1 276
2 901
3 167
4 103
5 28
6 17
7 7
8 6
13 1
NA 124

Number of Updates

Count of Versions Count of Studies
1 154
2 194
3 185
4 209
5 158
6 124
7 88
8 86
9 61
10 47
11 45
12 24
13 23
14 18
15 16
16 15
17 11
18 17
19 10
20 10
21 11
22 5
23 10
24 7
25 6
26 4
27 4
28 3
29 2
30 5
31 2
32 5
33 4
34 6
35 1
36 1
37 6
38 2
39 1
42 3
43 2
44 3
45 1
46 1
47 2
48 1
50 1
51 1
52 1
53 1
54 3
57 1
58 1
59 1
60 1
62 1
63 1
64 3
65 1
66 1
69 1
70 1
71 1
73 1
76 1
78 1
80 1
83 1
85 1
91 1
92 1
95 1
116 1
119 1
120 2
121 1
135 1
139 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 12572 1476 8.517615
Contacts/Locations 6682 1299 5.143957
Recruitment Status 2419 1293 1.870843
Study Design 1766 1138 1.551845
None (earliest Version on record) 1630 1630 1.000000
Outcome Measures 1373 800 1.716250
Eligibility 1194 690 1.730435
Arms 1043 658 1.585106
Interventions 1043 658 1.585106
Sponsor/Collaborators 969 657 1.474886
Study Description 958 575 1.666087
Study Identification 850 547 1.553931
Oversight 604 486 1.242798
References 446 259 1.722008
Conditions 409 290 1.410345
More Information 388 192 2.020833
Results 270 270 1.000000
IPDSharing 242 194 1.247423
Baseline Characteristics 136 120 1.133333
Reported Adverse Events 117 103 1.135922
Results Submission Events 103 103 1.000000
Participant Flow 99 89 1.112360
Documents 96 81 1.185185
2020 Outcome Measures 1 1 1.000000
2020 Study Status 1 1 1.000000
Quality Control Review has not concludedReturned: February 10 1 1 1.000000
Quality Control Review has not concludedReturned: March 17 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 12.0 3.0000 5.00000 2.00000 1.0000 15.0000 3.000 2.0000
1st Qu. 15.5 30.0000 12.25000 22.50000 34.7500 41.0000 94.000 30.2500
Median 27.0 61.5000 24.00000 36.00000 76.5000 100.0000 217.000 72.5000
Mean 32.7 472.5751 32.04098 85.07143 112.5633 345.1395 681.177 546.9472
3rd Qu. 40.0 150.0000 36.00000 60.00000 141.0000 210.0000 486.000 192.0000
Max. 75.0 42127.0000 194.00000 1000.00000 1058.0000 4110.0000 25210.000 51520.0000

Trial Group Type

group_type Group_Count
Experimental 1669
Active Comparator 845
Placebo Comparator 425
No Intervention 228
Other 154
NA 124
Sham Comparator 22

Intervention Model

intervention_model Study_Count
Parallel Assignment 1065
Single Group Assignment 346
Crossover Assignment 169
Factorial Assignment 28
Sequential Assignment 11
NA 11

Primary Purpose

primary_purpose Study_Count
Treatment 1117
Prevention 201
Supportive Care 62
Other 54
Basic Science 53
Health Services Research 52
Diagnostic 43
NA 35
Screening 12
Device Feasibility 1

Observational Studies

Studies by Country

Country Study_Count
United States 132
NA 50
United Kingdom 31
France 30
China 26
Germany 18
Denmark 13
Belgium 11
Canada 10
Korea, Republic of 10
Japan 8
Spain 8
Turkey 8
Italy 7
Netherlands 6
Sweden 6
Taiwan 6
Brazil 5
Israel 5
Austria 4
Russian Federation 4
Switzerland 4
Thailand 4
United States|Canada 4
Egypt 3
Greece 3
Hungary 2
Romania 2
Albania 1
Argentina|Belgium|Czechia|Denmark|Finland|France|Germany|Hungary|Ireland|Israel|Italy|Lithuania|Luxembourg|Netherlands|Norway|Russian Federation|Saudi Arabia|Serbia|Slovenia|Spain|Sweden|Switzerland|United Kingdom 1
Australia 1
Australia|Belgium 1
Australia|Canada|United Kingdom 1
Australia|United Kingdom 1
Austria|Belgium|France|Germany|Spain|Switzerland|United Kingdom 1
Austria|Bulgaria|Czech Republic|Greece|Hungary|Italy|Poland|Spain 1
Austria|Denmark|France|Germany|Italy|Netherlands|Spain 1
Austria|Germany 1
Austria|Germany|Israel|Italy|Netherlands|Poland|Spain 1
Austria|Italy|Netherlands|Spain 1
Belarus 1
Brazil|France|Norway|South Africa|Sweden|Thailand|United Kingdom 1
Bulgaria|Czech Republic|Romania 1
Chile 1
Croatia 1
Croatia|Serbia 1
Czechia 1
Finland 1
Finland|France|Italy|Sweden|Switzerland|United Kingdom 1
Germany|Austria|France|Italy|Poland|Romania|Slovenia|Spain|Switzerland|United Kingdom 1
Germany|India|Sri Lanka 1
Haiti 1
Hong Kong 1
India 1
Indonesia 1
Macedonia, The Former Yugoslav Republic of 1
Malaysia 1
Mexico 1
Norway 1
Pakistan 1
Singapore 1
Slovenia 1
South Africa 1
Sweden|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Czech Republic|France|Germany|Italy|Japan|Netherlands|Norway|Poland|Romania|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
United States|Bolivia|Canada|Chile|India|United Kingdom 1
United States|Canada|Israel|Singapore|United Kingdom 1
United States|Italy|Sweden|United Kingdom 1
United States|Puerto Rico 1

Sites per Study

Site_count Study_Count
1 348
2 33
3 10
4 3
5 8
6 3
7 3
8 3
9 2
10 3
11 2
12 5
13 4
14 2
16 1
17 2
18 3
19 2
21 3
22 2
23 1
24 1
26 2
29 1
31 2
32 1
35 1
40 1
41 1
52 1
69 1
76 1
87 1
95 1
108 1
266 1
908 1

Number of Updates

Count of Versions Count of Studies
1 80
2 79
3 83
4 38
5 33
6 30
7 17
8 14
9 13
10 10
11 7
12 7
13 5
14 2
15 1
16 2
17 4
18 4
22 2
23 1
24 3
26 1
28 1
30 1
31 3
33 1
37 2
39 2
53 1
54 2
56 1
59 1
62 1
66 1
79 1
85 1
91 1
102 1
105 1
120 1
121 1
159 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 3175 381 8.333333
Contacts/Locations 856 300 2.853333
Study Description 593 149 3.979866
Recruitment Status 462 291 1.587629
None (earliest Version on record) 461 461 1.000000
Study Design 431 255 1.690196
Sponsor/Collaborators 236 155 1.522581
Eligibility 233 139 1.676259
Outcome Measures 207 152 1.361842
Study Identification 160 111 1.441441
Groups 154 122 1.262295
Interventions 154 122 1.262295
References 109 53 2.056604
Oversight 102 87 1.172414
Conditions 97 65 1.492308
Results 34 34 1.000000
IPDSharing 33 30 1.100000
More Information 25 20 1.250000
Baseline Characteristics 5 5 1.000000
Results Submission Events 4 4 1.000000
Documents 3 2 1.500000
Reported Adverse Events 2 2 1.000000
Participant Flow 1 1 1.000000

Enrollment Metrics

Measure Observational
Min 1.00
1st Qu 63.50
Median 180.50
Mean 74308.88
3rd Qu 596.00
Max 19929901.00

Observation Model

observational_model Study_Count
Cohort 284
Case-Only 44
Case-Control 36
NA 34
Case Control 27
Other 23
Case-Crossover 4
Family-Based 4
Defined Population 2
Natural History 2
Case Control, Natural History 1

Time Perspective

time_perspective Study_Count
Prospective 286
Cross-Sectional 79
Retrospective 60
Other 16
NA 16
Longitudinal, Retrospective 2
Cross-Sectional, Retrospective/Prospective 1
Longitudinal, Retrospective/Prospective 1

Registries

Studies by Country

Country Study_Count
United States 14
NA 5
Germany 3
China 2
India 2
Taiwan 2
Turkey 2
United Kingdom 2
Australia|Germany|United Kingdom 1
Austria 1
Belgium|Austria|France|Germany|Switzerland 1
Denmark 1
Egypt 1
Korea, Republic of 1
Netherlands|Russian Federation 1
Pakistan 1
Russian Federation 1
Spain 1
Sweden 1
Switzerland 1

Sites per Study

Site_count Study_Count
1 32
2 1
3 1
4 2
6 1
9 1
12 2
14 1
18 1
20 1
125 1

Number of Updates

Count of Versions Count of Studies
1 9
2 6
3 6
4 6
5 2
6 3
7 2
8 1
9 1
10 1
11 2
12 1
13 1
15 2
31 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 196 35 5.600000
Contacts/Locations 93 24 3.875000
None (earliest Version on record) 44 44 1.000000
Recruitment Status 33 21 1.571429
Study Description 29 17 1.705882
Study Design 26 17 1.529412
Outcome Measures 24 13 1.846154
Eligibility 19 17 1.117647
Study Identification 16 13 1.230769
Groups 13 11 1.181818
Interventions 13 11 1.181818
References 13 8 1.625000
Sponsor/Collaborators 11 10 1.100000
Oversight 8 7 1.142857
Conditions 7 7 1.000000
IPDSharing 5 5 1.000000
Results 2 2 1.000000
More Information 1 1 1.000000
Reported Adverse Events 1 1 1.000000

Enrollment Metrics

Measure Registries
Min 30.0
1st Qu 192.5
Median 381.0
Mean 159863.2
3rd Qu 2507.5
Max 5940299.0

Registry Model

observational_model Study_Count
Cohort 30
Case-Control 4
Case-Only 3
Other 3
Case Control 2
NA 2

Time Perspective

time_perspective Study_Count
Prospective 31
Cross-Sectional 11
Other 1
NA 1

Follow-up

target_duration Study_Count
10 Years 8
5 Years 6
1 Day 5
2 Years 4
12 Months 2
2 Months 2
20 Years 2
24 Months 2
3 Years 2
1 Year 1
12 Weeks 1
17 Years 1
18 Months 1
2 Weeks 1
36 Months 1
6 Months 1
7 Years 1
8 Years 1
84 Months 1
90 Days 1